Rate of the reaction



is fastest when Z is

• Cl

• OCOCH₃

• OC₂H₅

• OC₂H₅

The compound formed on heating chlorobenzene with chloral in the presence concentrated sulphuric acid is

• gammexene

• hexachloroethane

• Freon

• Freon

2 methylbutane on reacting with bromine in the presence of sunlight gives mainly

• 1 – bromo -2 - methylbutane

• 2 – bromo -2 - methylbutane

• 2 – bromo -3 - methylbutane

• 2 – bromo -3 - methylbutane

Elimination of bromine from 2-bromobutane results in the formation of-

• equimolar mixture of 1 and 2-butene

• predominantly 2-butene

• predominantly 1-butene

• predominantly 1-butene

Which one of the following has the minimum boiling point?

• n-butane

• isobutane

• 1- butene

• 1- butene

6.

Which of the following will have meso-isomer also?

• 2- chlorobutane

• 2- hydroxyopanoic acid

• 2,3 – dichloropentane

• 2,3 – dichloropentane

The IUPAC name of the compound shown below is

• 2-bromo-6-chlorocyclohex-1-ene

• 6-bromo-2-chlorocyclohexene

• 3-bromo-1-chlorocyclohexene

• 3-bromo-1-chlorocyclohexene

HBr reacts with CH₂ = CH – OCH₃ under anhydrous conditions at room temperature to give 

• CH₃CHO and CH₃Br

• BrCH₂CHO and CH₃OH

• BrCH₂ – CH₂ – OCH₃

• H₃C – CHBr – OCH₃

Tertiary alkyl halides are practically inert to substitution by S_N2 mechanism because of

• insolubility

• instability

• inductive effect

• inductive effect

Alkyl halides react with dialkyl copper reagents to give

• alkenes

• alkyl copper halides

• alkanes

• alkanes